Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 22, NWS St. Louis, MO

March 2, 20124 counties in Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Mar 2, 2012, 3:34 AM CST for 4 counties in Missouri. It was in force for 41 min. 7 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Mar 2, 2012, 3:34 AM CST (09:34 UTC)
Expired: Mar 2, 2012, 4:15 AM CST
In force: 41 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Callaway County, MO, Cole County, MO, Moniteau County, MO, Osage County, MO

The radar

The St Louis radar (KLSX), 140 km from the middle of the area, began a volume at 09:36 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Mar 2, 3:45 AM CST	HAIL 0.7	Brazito, MO
Mar 2, 3:45 AM CST	HAIL 1	Hickory Hill, MO
Mar 2, 3:48 AM CST	HAIL 1	2 Sw Brazito, MO	OBSERVED ON HIGHWAY 54.
Mar 2, 3:49 AM CST	HAIL 2.75	Brazito, MO	GOLF BALL TO BASEBALL SIZED HAIL DAMAGING MOTOR VEHICLE WINDOWS IN AREA.
Mar 2, 4:00 AM CST	HAIL 0.7	Jefferson City, MO	PEA TO DIME SIZED HAIL IN JEFFERSON CITY
Mar 2, 4:00 AM CST	HAIL 1.25	Taos, MO
Mar 2, 4:01 AM CST	HAIL 0.25	Jefferson City, MO	ON THE EAST SIDE OF JEFFERSON CITY

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 2, 2:07 AM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 9.6 hours before the alert went out and 218 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3164 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 241 m²/s²
0-3 km storm-relative helicity: 396 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

621 
WUUS53 KLSX 020934
SVRLSX
MOC027-051-135-151-021015-
/O.NEW.KLSX.SV.W.0022.120302T0934Z-120302T1015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
334 AM CST FRI MAR 2 2012

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN CALLAWAY COUNTY IN CENTRAL MISSOURI...
  COLE COUNTY IN CENTRAL MISSOURI...
  SOUTH CENTRAL MONITEAU COUNTY IN CENTRAL MISSOURI...
  OSAGE COUNTY IN CENTRAL MISSOURI...

* UNTIL 415 AM CST

* AT 332 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR ELDON...AND MOVING EAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...
  JEFFERSON CITY...HOLTS SUMMIT...LINN...RUSSELLVILLE...HICKORY
  HILL...BRAZITO...ST. MARTINS...ST. THOMAS...WARDSVILLE...TAOS...
  WESTPHALIA...LAKE MYKEE...RICH FOUNTAIN...ENON...EUGENE...LOHMAN...
  OSAGE BEND...SCHUBERT...WAINWRIGHT AND OSAGE CITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3873 9200 3836 9173 3832 9220 3833 9220
      3832 9226 3834 9229 3833 9240 3842 9241
      3843 9263 3847 9268
TIME...MOT...LOC 0933Z 251DEG 54KT 3836 9252
WIND...HAIL <50MPH 1.00IN

$$

KANOFSKY

1 follow-up statement

244 
WWUS53 KLSX 020954
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
354 AM CST FRI MAR 2 2012

MOC135-021003-
/O.CAN.KLSX.SV.W.0022.000000T0000Z-120302T1015Z/
MONITEAU MO-
354 AM CST FRI MAR 2 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL MONITEAU COUNTY
IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 3841 9238 3859 9236 3873 9200 3836 9173
      3832 9220 3833 9220 3832 9226
TIME...MOT...LOC 0953Z 251DEG 54KT 3845 9216

$$

MOC027-051-151-021015-
/O.CON.KLSX.SV.W.0022.000000T0000Z-120302T1015Z/
CALLAWAY MO-COLE MO-OSAGE MO-
354 AM CST FRI MAR 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR OSAGE...COLE
AND SOUTHWESTERN CALLAWAY COUNTIES UNTIL 415 AM CST...

AT 349 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED NEAR BRAZITO...OR 10 MILES SOUTH OF JEFFERSON
CITY...MOVING EAST AT 60 MPH.

TRAINED WEATHER SPOTTERS REPORTED QUARTER SIZE HAIL AT 345 AM IN 
HICKORY HILL.

LOCATIONS IMPACTED INCLUDE...
  HOLTS SUMMIT...LINN...TAOS...WESTPHALIA...LAKE MYKEE...RICH
  FOUNTAIN...SCHUBERT...WAINWRIGHT...OSAGE CITY...LOOSE CREEK...
  BONNOTS MILL AND TEBBETTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3841 9238 3859 9236 3873 9200 3836 9173
      3832 9220 3833 9220 3832 9226
TIME...MOT...LOC 0953Z 251DEG 54KT 3845 9216
WIND...HAIL <50MPH 1.00IN

$$

KANOFSKY

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 2, 3:59 AM CST	Severe Thunderstorm Warning	LSX	Cole, Osage	46 min
Mar 2, 4:08 AM CST	Severe Thunderstorm Warning	LSX	Callaway, Cole, Franklin, Gasconade, Montgomery, Osage and 1 more	37 min
Mar 2, 4:37 AM CST	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Osage	38 min
Mar 2, 4:41 AM CST	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Lincoln, Montgomery, Warren	49 min
Mar 2, 5:10 AM CST	Severe Thunderstorm Warning	LSX	Lincoln, Saint Charles, Warren	39 min
Mar 2, 5:13 AM CST	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Saint Louis, Warren	47 min
Mar 2, 5:56 AM CST	Severe Thunderstorm Warning	LSX	Lincoln, Saint Charles, Saint Louis, City of Saint Louis	49 min
Mar 2, 5:59 AM CST	Severe Thunderstorm Warning	LSX	Callaway	28 min
Mar 2, 6:36 AM CST	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Pike	39 min
Mar 2, 7:07 AM CST	Severe Thunderstorm Warning	LSX	Lincoln, Pike	30 min
Mar 2, 1:59 PM CST	Wind Advisory	LSX	Crawford, Franklin, Gasconade, Iron, Jefferson, Lincoln and 10 more	4 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2012 Every severe thunderstorm warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.